Carbon pack holder for manifold typewriters



Oct. 23, 1951 L. A. PETIT v2,572,279

CARBON PACK HOLDER'FOR MANIFOLD TYPEWRITERS Filed Feb. 14, 1949 2 SHEETS- SHEET 2 ma fla .MHI Mm W M O ma .53 o ma EYVE'HTUP [4020/05 4 Ian?" Patented Oct. 23, 1951 OFFICE CARBON PACK HQLDER FOR MANIFOLD TYPEWRITERS Laurence A. Petit, Chicago, Ill. Application February 14, 1949, Serial No. 76,383

15 Claims. (01. 197-126) This invention relates to a carbon pack holder for use in machines such as manifold. typewriters, billin machines and the like in which a plurality of long sheets or webs of paper, with sheets of carbon paper between the individual sheets, are fed simultaneously to the printing position in the machine. Normally, the sheets of paper are perforated to permit tearing on the Sheets at interval's'. Each section of each sheet between the perforations normally contains a printed form such as an invoice form or a bill of lading form into which the operator inserts data by means of typwriti'n'g. The s'hee'ts' of carbon paper arecustomarily fed between the work sheet from packs of carbon paper, each pack beingdisposed between two adjoining sheets of paper. While a section of carbon paper of thsani'e size as the printed forms of the'pape'r is preferably used repeatedl'y for the" sake of economy, from time to' time fresh sections of carbon paper have to be pulled from the individual packs in order to ad- Vance fresh-'portions-of carbon paper toth'e'print ing position: i

A manifold typewritin'g machine of the type described shown in my prior Patent N6. 2,236,155, issued March25, 1941.

An object of the present inventiorri's' to provide animproved carbon pack holder constructed in a manner such' that it may be positioned and used between adjoining sheets of aper with a maximum' of convenience.

Another object of the invention is to provide an improved carbonpack holder which affords a convenient me'afis for" lockingthe pack temporarily against' the further withdrawal of carbon paper from the holder, and also provides means for quickly releasing the carbon paper from the pack holder without separating the paper webs.

Another object Of the" invent-ionis to' provide marten peek holder or 'thetypedescribed which is readily mountable between adjoiningwebs'of paper and which may be re-used' repeatedly for supportin 'pa'cksor carbonpa'per. w I

' A further'obje'et of thepre'sent' invention is to provide a carbon pac'l' holder and a clamping mechanism foran extended carbon sheet, the lfi'cfianisln' being self-locking in either clamping or released position-.- H

Another object or the" present invntion'is to provide a carbonpack" holder which is gimme in c'onstruetion and affords a considerable saving inane-"amount o'f carbon paper normally used conjunction with m'ai'nifolding typewriters.

l? have herein provided a carbon pack holder having elements associated therewith which hold the carbon paper in position within the pack for easy release when it is desired to remove individual lengths of carbon paper from the holder.

A more specific description of the improved carbon pack holder of the present invention will be made in conjunction with the attached sheets of drawings.

On the drawings:

Figure 1 represents a top plan view of a holder according to the present invention having a car bon pack mounted thereon and showin the clamping holder in clamping position;

Figure 2 is a top plan view illustrating specifically the clamping holder in released position;

Figure 3 is a bottom plan view of the pack holder and pack shown in Figure 1;

Figure 4 is a top plan view of the clamping holder illustrating the condition where the oper-' ating arm has been released from the stop prior to securing the device in released position shown in Figure 2;

Figure 5 is a cross-sectional view taken along the line V-V of Figure 1;

Figure 6 is an expanded view of the carbon pack alone; and

Figure 7 is an enlarged view similar to Figure 5 showing in particular'the configuration of the lip structure.

As shown on thedrawings:

Reference numeral Ill denotes a carbon pack holder preferably constructed of a light sheet metal. The holder I0 includes a generally rectangular frame formed from members ll, I2; 13 and M which are rigidly secured together, as by rivets I00. A rigid mounting bar 5 for mounting the pack holder on the manifold machine is slidably disposed transversely across the sup; porting members I l and I3 and passes through a slot I6 which is punched out of the member l3. The mounting" bar I5 is slidably mounted on the: underside of member II by means of strips l! which are secured to member H by means of screws l8 and I9. While the slot 16 firmly holds the mounting bar l5, the strips l1 permit that end of the mounting bar I5 to be moved laterally a small amount; This lateral movement of the mounting bar l5 relative to the rigid members of the frame assembly is permitted to adjust the pack holder and the pack relatively to the longi tudinal path of travel of the continuous sheets of paper which are moving through the machine; thus lining up the pack with the paper. After the proper adjustment, the screws I 8 and ['9 may be'tightened to preserve the desired alignment.-

A pair of retaining posts" 20 and 2! are pro- 3 vided on the uppermost frame member l2 to register with the holes of the same diameter provided in the paper backing of the carbon pack to be used.

The carbon pack to be used in conjunction with the pack holder is generally indicated by reference numeral 36, and includes an envelope comprising a backing member 22 and a covering sheet 24 having its marginal ends secured to the underside of the backing member 22. A long folded strip of carbon paper 23 is inserted into the open ended envelope formed from the backing member 22 and the covering sheet 24.

As best illustrated in Figure 5, the bottom frame member !4 has an upwardly extending curved flange or lip 25 over which the carbon paper must be drawn as it is being extracted from the pack. A transversely extending clamping bar 26 is pivotally mounted by means of a pin 3i to the frame assembly. The clamping bar has an operating lever arm 28 for directingthebar 26 against an end portion 23a of the carbon paper to hold the same against the upturned lip 25 thus preventing the carbon paper from being inadvertently pulled out of the pack.

As best shown in Figures 5 and 7, the lip 25 is formed into a generally concave upwardly extending surface with the bar 26 pressing the end portion 23a against a point on the upwardly extending surface of the lip 25 displaced laterally from the point where the end portion 23a overhangs the end of the lip 26. This arrangement causes the carbon paper to be doubled back on itself and makes it more difficult to withdraw the paper from the holder when the bar 26 is in clamping position.

To manipulate the clamping bar into its locking and released positions, there is provided a second lever arm 29 which is pivotally mounted on the clamping bar 26 by means of pin 30. A spring 33 is positioned between the lever arms 28 and 29 and is held in position by having its ends secured Within apertures provided in flange portions 26a and 29b of lever arms 28 and 29. The spring 33 acts to urge the arms 28 and 29 apart to help in looking the clamping bar 26 against the lip 25, as will be hereinafter described.

The lever arm 29 is provided with a contacting face 29a adapted to act against stop 32 which is rigidly secured to the frame assembly. The stop 32 is formed with an inclined face 32a. When the face 32a is aligned and in contact with corresponding face 29a of the lever arm 29, the clamping bar 26 is held rigidly and locked in a position where it holds the end'portion of the carbon paper 2311 against the lip 25 of the rigid frame assembly. The spring 33 acts to hold the face 29a of the arm 29 against the face 32a of the stop 32, so that the clamping bar 26 cannot be released from the locked position shown in Figure 1 by manipulation of the arm 28 alone nor by any inadvertent pulling force exerted by the extended carbon sheet tending to retract the clamping bar 26. The spring 33 acts to seat the face 29a tightly against the face 32a regardless of the amount of wear on the face 29a. Thus, the lever arm 29 may be formed from a simple metal stamping without any necessity forhardened portions to withstand wear.

When it is desired to release the clamping bar 26, pressure is applied by the operators fingers to the free ends of the lever arms 28 and 29 to bring said lever ends together against the action of the spring 33. Upon movement toward each other of the free ends of lever arms, 28 an about the pin 3i.

chine.

contact is made between a flange 290 on the lever arm 29 and a corresponding flange 282) on the lever arm 28. When this condition is reached, the contacting face 29a of the lever arm 29 is out of contact with the inclined face 32a on the stop 32, as shown in Figure 4. Further joint movement of the two lever arms 28 and 29 then permits the clamping bar 26 to be withdrawn from its contact with the end of the carbon paper 2311 by virtue of the pivoting of the clamping bar When finger pressure is released on the arms 28 and 29, when the clamping bar is in the retracted or released position shown in Figure 2, the spring 33 urges the arm 29 away from the arm 28, causing the base of the contacting face 290. to rest against the inclined face 32a of the stop 32 without exerting restoring pressure on the bar 26. This condition is best illustrated in Figure 2 of the drawings. In the condition illustrated, the clamping bar 26 stays in this released position, permitting any desired length of carbon paper to be withdrawn from the pack.

To guide the carbon paper as it is being withdrawn from the pack, a guiding bar 34 is, provided, the guiding bar 34 being rigidly secured to the upstanding frame member I l.

After an appropriate length of carbon paper has been withdrawn from the pack, the clamping bar may be restored to its clamping position by pinching together the lever arms 26 and 29, thus releasing the base of the contacting face 29a from its rest position against the contacting face 32a of the stop 32, and while so pinched together, rotating the two lever arms in a counterclock-v wise direction about the pin 3| to return the clamping bar 26 to its clamping position.

In my prior Patent No. 2,236,165, issued March 25, 1941, I have shown a shiftabl'e carriage mounted on the frame of the manifolding machine, the carriage including a plurality of stepped brackets'so that the carbon packs and their holders may be mounted at different levels for interleaving between the several sheets of paper being drawn through the manifolding ma- The carriage is usually pushed toward the rear, that is away from the platen, by the operator after one set-of forms has been completely filled, in order that the sheets of carbon, paper in use at the time may be withdrawn from between the typed forms before they are torn off and removed from the machine. Such reciprocating carriages, operating in this manner, are common in this type of machine.

In my copending application Serial No, 738,148, I have described means for supporting the carbon packs between the sheets of paper in properly, spaced relation by means of supporting structure carried at only one end of the carriage. It this type of structure, described in my copending application, that I prefer to use with the carbon pack holder of the present invention.

It will be apparent that I have herein provided a carbon pack holder which supplies fresh sheets of carbon paper without disturbing the arrangement or alignment of the work sheets. Further, I have herein provided a novel clamping member which by simple manipulation can be held in either the clamping or released position.

It will, of course, be understood that various details of construction may be varied through a wide range without departing from the principles of this invention and itis, therefore, not the purpose to limit the patentgranted hereon otherwise than necessitated by the scope of the appended claims. 1

I claim as my invention:

, 1 A carbon pack holder for mounting in a manifold machine comprising arigid frame have 1 1% a flanged edge .over which a free end of a carbon-pack held in said holder is adapted to extend, a transversely extending memberfor yieldably clamping the free end of the carbon pack against said flanged edge and having .a lever arm pivotally mounted on said frame for movement of said transversely extending member toward said flanged edge, and manually releasable means cooperating with said lever arm for adiiista ly lockin said transv rse y e ten in member -.in clamping relationship with said flanged edge. I ,v 2.-. Acarbon pack holder adapted or mounting ina manifold machine comprising a rigid frame havin a flanged edge over which a free end of a earbon pack held in said holder is adapted to extend, .a transversely extending member for yieldably clamping the free .end of the carbon pack against said flanged edge and having .a lever arm attached to one end of said transversely extending member and pivotally mounted on said fran ejfor movement of said transversely extending member into clamping position, an abutment on the frame, and a second lever arm pivotally mounted on said first "arm and adjustably coacting wi h said abutment for holding said transversely extending member in clamping position.

3. A carbon pack holder adapted for mounting in a manifold machine comprising a rigid frame havin .a flanged edge over which a free end of a carbon pack held in said holder is adapted to xtend, a tr ns e e y extendin m e for yieldably clamping the free end of the carbon back a i st s fla ed d and having a e er arm inte ra ly rmed the sai ever arm beingpivotally mounted on said frame for effecting movement of said transversely extending in mb to a d f m cl mpin p ti n. an abu merit on said frame, and a second lever arm p ivotally mounted on said .first arm, said second lever arm being shiftable to one position to cooperate with said abutment for holding said transversely extending member in clamping position, and being shiftable to another position out of cooperation with said abutment for releasing said member.

4. ,A carbon pack holder adapted for mounting in a manifold machine comprising a rigid frame, having a flanged edge over which a free end of a carbon pack held in said holder is adapted to extend, a transversely extending member for yieldably pressing the free end of the carbon pack against said flanged edge, a lever arm attached to said transversely extending member, said lever arm being pivotally mounted on said frame for movement of said transversely extending member against said flanged edge, a second lever arm pivotally mounted on said first arm for locking said transversely extending member in engagement with said flanged edge, and resilient means acting between said lever arms urging said arms apart.

5. A carbon pack holder adapted for mounting in a manifold machine comprising a rigid frame having a flanged edge over which the free end of a carbon pack held in said holder is adapted to extend, a transversely extending member for yieldably pressing the free end of the carbon pack against said flanged edge, a lever arm attached to said transversely extending member, said lever arm being pivotally mounted on said frame for effecting movement i i-said transr rsely ex endin member aga nst and awa tram sa driane d edge second arm pivotally attached to said first arm for releasably holding said transversely extending member in engagement with said flanged edge, and means 9. said f ame coastin with said sec nd a for niaintafimins said tra sve sely extendi memhe -out of conta t with sa d fl g d ed t p mitjlengths of carbon paper to be withdrawn om a dframe- .6, .A carbon pa k holder adapte for mou t ing manifo d machine compris a rigid raln ilavine a flang d edg over whi h the fre end of a carbon pack held in said holder a pted to extend, a transversely extending membe I0 yie dably pr ss ng the free end o the ar on pack aga st sa d fla d edge, a lever ar h tache to d a sv r y xt nd: ing 'member, said lever arm being pivotally mounted on said frame for movement of said ansve se y ext nd ng mem a nst s d fl n ed edg a s nd arm manually op ab e and pivotally'attached to said first arm for releasing said transversely extending member from engagement with said flanged edge, and means on said frame .coacting with said second arm for selectively maintaining said transversely extending member in engagement with said flanged e ge and out of engagement therewith.

7. .A carbo pa k ho der adapted for mounti is n ma ro d ach ne comprisin a ri id frame having a flanged edge over which the free end of a carbon pack held in said holder is adapted to extend, a guide bar attached to said frame for guiding carbon paper from said pack passing thereunder, a transversely extending member disposed between said frame and said guide bar for yieldably pressing the free end of the carbon pack against said han ed ed e, a lever arm attached to said transversely extending member and pivotally mounted on saidframe for movement of said transversely extending member against and away from said flanged edge, stop means on the frame, and adjustable means mounted on said lever arm coasting with the stop means for locking said transversely extendins m mb r in en a eme t with sai fl ng d edge.

'8- jI a arbon pack holder includin a rigid rame and a support n arm adjustably conested to said frame or attachment t a minifold i r ae l ine'for supporting said frame between ad acent work sheets. a transv rsely exten i arm for releasably pressing one end portion of the carbon pack against said frame, a lever arm pivotally attached to said frame for actuating said transversely extending arm, a second lever arm pivotally attached to said first arm for actuating said first arm, and means coacting with said second arm for locking said transversely extending arm in contact with said end portion.

9. In a carbon pack holder including a rigid frame and a supporting arm adjustably connected to said frame for attachment to a manifold machine for supporting said frame between adjacent work sheets, a transversely extending clamping arm for releasably clamping a portion of the carbon pack against said frame, a lever arm pivotally attached to said frame for actuating said transversely extending arm, a second lever arm pivotally attached to said first arm, a resilient member urging the ends of said arms apart, and stop means on said frame engageable by said second arm, said stop means and said two lever arms coacting to hold said clamping arm locked in clamping position against releas ing pressure exerted on the clamping arm by the'carbon pack.

10. In a carbon pack holder assembly including a rigid frame having a flanged edge and carrying a carbon pack having a free end adapted to extend over said edge, a transversely extending member for yieldably' pressing the free end of the carbon pack against said flanged edge, a lever arm attached to said transversely extending member and pivotally mounted on said frame for movement of said transversely extending member against said flanged edge, a second lever arm pivotally attached to said first arm, spring means urging said lever arms apart, and stop means on said frame for limiting the'pivotal movement of said second arm and for "coacting therewith to hold said transversely extendin member securely clamping relation against said flanged edge;

11. In a carbon pack holder assembly including a rigid frame having a "flanged edge and carrying a carbon pack having a free end'adapted to' extend over said edge, a transversely extending member for yieldably pressing the free end of the carbon pack against said flanged edge, a lever arm attached to said transversely extending member and pivotally mounted on said frame for movement of said transversely extending member against said flanged edge, a second lever arm' pivotally attached to said first arm, a spring urging said lever arms apart, and stop means on said frame having an inclined face for contacting a face on said second arm to hold said transversely extending meirber securely in clamping relation against said flanged edge.

l2. A carbon pack holder comprising a frame for supporting a pack of folded'carbon paper, said frame having a marginal lip, a guiding bar secured to said frame and extending'in spaced relation to said frame and said lip to provide an elongated opening through which to withdraw paper from said" pack, a member pivotally mounted upon'said frame having an arm extending between said bar and said frame and having a lever extending beyond said frame for manual operation, a second manually operable lever pivotally mounted upon said first lever, resilient means urging the free ends of said levers apart, and a stop on said frame cooperating with said second lever to limit'the separating movement of said lever 'ends and also cooperating to releasably hold said arm in position to clamp said carbon paper against said lip, said arm being releasable from clamping position by pinching together said lever ends to provide clearance between said second lever and said stop and thus permit pivotal movement of said member out of clamping position.

13. In a carbon pack holder including a rigid frame and a transversely extending arm for releasabl'y clamping an end portion of the carbon pack against withdrawal, a lip carried by said frame'having an upwardly inclined surface for guiding said end portion therealong, said lip being disposed such that said arm contacts said lip at a point along the upwardly inclined surface thereof.

14;,In a carbon paper support for use in' a manifold machine and the like and which sup port includes a frame member and a transversely extending arm cooperable therewith for releas ably 'clamping'an end portion of carbon paper against withdrawal from the support, an offset lip on the frame member engageable by said'arm for releasably clamping said carbon paper end portion to said lip and said lip having an overhanging edge for engaging and placing a drag on the carbon paper when it is being withdrawn; 7 15. In a carbon paper support for use in a manifold machine and the like and which support includes a frame member and a transverse-j 1y extending arm cooperable therewith for releas'ably clamping an end portion of carbon paper against withdrawal from the support, an offset lip on the frame member engageable by said arm for releasably clamping said carbon paper end portion to said lip and said lip having an overhanging edge for engaging and placing a drag on the carbon paper when it is being withdrawn; and spring urged lever means for holding said arm in engagement with said lip and manually operable to move said arm out of such engage ment when it is desired to withdraw carbon paper over said lip.

LAURENCE A. PETIT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PA'IEN'I S 

